Third-Harmonic Generation of Polymeric Charge-Transfer Complex Film

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Abstract
Nonlinear optical property of polymeric charge transfer complex was investigated in terms of the complex composition. The third-order nonlinear optical susceptibility X (3) 1111(-3ωω,ω,ω) of poly-n-vinylcarbazole complexed with 2,4,7-trinitrofluorenone or 2,3-dichloro-5,6-dicyano- 1,4-benzoquinone was evaluated by means of the rotational Maker fringe of third-harmonic generation at the fundamental wavelength (Ω) of 1.906 μm. The magnitude of X (3) was 10−12 esu order and was increased linearly with the content of charge-transfer complex in the film.